Great work, I really like the 3D. Awesome details and modelling. The 2d fits nicely and is surely a nice addition.
Colors are great, too...this really has the mood of some kind of old and outdated machinery

Really cool composition.... good collage of 3d and 2d, I like your style of 2d. mmmm one thing . Blacks and whites on top are not the same as black and whites on bottom. some color correction ? other then that worth a fav mate!!!